The purpose of this study was to evaluate pharmacotherapy provided, to identify drug related problems and to highlight the role of pharmacist at ward level in tertiary care hospitals. Drug related problems are quite common in hospitalized patients and can results in patient’s morbidity, mortality, and increase the expenditure of therapy and lengthen the hospital stay. A total of 30 patient’s case histories were recorded in medical Ward at Hayatabad Medical Complex, Peshawar on the standard designed questionnaire. The percentage occurrence of different disease likediabetes mellitus (26.66%), Malaria (16.6%), COPD (10%), Stroke (10%), T.B (6.6%) and CHF (6.6%) were determined .Diabetes mellitus was higher among diseases. The drugs with potential drug interactions were dexamethasone, furosemide, omeprazole, aspirin, rifampicin.Interventions like addition of new drug was highest among the recorded interventions.With the focus on individual patient, extensive and responsible clinical pharmacy services will be a key segment of present-day health care.